diff options
Diffstat (limited to 'lib/librte_eal/common/include/arch/x86/rte_atomic_32.h')
| -rw-r--r-- | lib/librte_eal/common/include/arch/x86/rte_atomic_32.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/lib/librte_eal/common/include/arch/x86/rte_atomic_32.h b/lib/librte_eal/common/include/arch/x86/rte_atomic_32.h index fb3abf18..a932f354 100644 --- a/lib/librte_eal/common/include/arch/x86/rte_atomic_32.h +++ b/lib/librte_eal/common/include/arch/x86/rte_atomic_32.h @@ -98,6 +98,18 @@ rte_atomic64_cmpset(volatile uint64_t *dst, uint64_t exp, uint64_t src) return res; } +static inline uint64_t +rte_atomic64_exchange(volatile uint64_t *dest, uint64_t val) +{ + uint64_t old; + + do { + old = *dest; + } while (rte_atomic64_cmpset(dest, old, val) == 0); + + return old; +} + static inline void rte_atomic64_init(rte_atomic64_t *v) { |